Iowa Department of Corrections Report to the Board of Corrections, Women Offenders, 2006

This report goes beyond documentation of the population growth and needs of women offenders to describe how the Iowa Department of Corrections is addressing treatment needs of the female offender population. Except where noted, information was obtained from the Iowa Corrections Offender Network (ICON) with many of the reports obtained via the Iowa Justice Data Warehouse.

Status of Iowa Women Report, 2006

The Iowa Commission on the Status of Women (ICSW) is a state agency that seeks to assure equality for Iowa women. As an advocacy agency, the Commission works to equalize women's opportunities and to promote full participation by women in the economic, political, and social life of the state. This is the tenth edition of the Status of Iowa Women Report. Many positive changes toward women's full participation in all aspects of society are evident in this edition: more women than ever are getting a post-secondary education and they have made significant inroads into some traditionally male-dominated work domains. Still, much remains to be done. The 2006 report also shows that girls, by and large, are not enrolling in upper-level high-school computer courses, a necessity for the 21st century; women's earnings lag behind men's; and women continue to be raped, beaten, and battered at staggering rates. Much work needs to be done at the community and state levels to address those and other challenges addressed in this publication.

Iowa Commuting Patterns, 2000

A century ago, the majority of workers were employed near their homes—on farms or in cities and towns. As industrialization increased and suburbs surrounded central cities, commuting meant going from homes in suburbs to jobs in cities. Today, there is a growing trend of workers commuting between suburbs. On any given day, 61,775 workers commute to jobs in Iowa counties other than the one in which they live. The most important reason for increased commuting has been employment growth. Rising incomes and the growth of suburbs have also been factors. In the past, the increased employment of women added to the number of commuters. Commuting patterns are a key consideration in transportation planning. In more urban states than Iowa, there is concern that the use of mass transit continues to decline. In Iowa, where so much of our commuting is between counties, private vehicles are often the only practical means of getting to and from work. On any given day, 1,155,008 single-occupancy vehicles are driven to and from jobs somewhere in Iowa. At the same time, an additional158,699 workers share rides by participating in carpools.

Iowa Gender Wage Equity Study, 2008

In 1993, Iowa Workforce Development (then the Department of Employment Services) conducted a survey to determine if there was a gender gap in wages paid. The results of that survey indicated that females were paid 68 cents for every dollar paid to males. Another study was conducted in 1999 which found that females made approximately 73 cents for every dollar made by males in Iowa. These calculations took into account the average number of hours respondents worked weekly. In January 2008, Iowa Workforce Development (IWD) was contacted by the Iowa Commission on the Status of Women (ICSW) to request that IWD conduct research to update the 1999 gender wage equity study to determine if the wage disparity between males and females has changed since the 1999 study. This study was completed by IWD using 2007/2008 Laborshed data consisting of responses from 5,669 employed respondents. Of the respondents, 59.6 percent (3,379) were female, 40.3 percent (2,285) were male, and 0.1 percent (5) refused to identify their gender. Statewide sampling was provided by the University of Northern Iowa’s Institute for Decision Making based on the population per ZIP code. The results of the survey show that females who are paid an hourly wage earn 21.8 percent (78.2 cents for every dollar) less than males earn and females who are salaried earn 21.6 percent less than males. Additional survey results detail the occupational categories, industries and the education and experience levels. All of these characteristics contribute to the disparity.

Main-Channel Slopes of Selected Streams in Iowa for Estimation of Flood-Frequency Discharges, November 2004

This report describes a statewide study conducted to develop main-channel slope (MCS) curves for 138 selected streams in Iowa with drainage areas greater than 100 square miles. MCS values determined from the curves can be used in regression equations for estimating flood frequency discharges. Multi-variable regression equations previously developed for two of the three hydrologic regions defined for Iowa require the measurement of MCS. Main-channel slope is a difficult measurement to obtain for large streams using 1:24,000-scale topographic maps. The curves developed in this report provide a simplified method for determining MCS values for sites located along large streams in Iowa within hydrologic Regions 2 and 3. The curves were developed using MCS values quantified for 2,058 selected sites along 138 selected streams in Iowa. A geographic information system (GIS) technique and 1:24,000-scale topographic data were used to quantify MCS values for the stream sites. The sites were selected at about 5-mile intervals along the streams. River miles were quantified for each stream site using a GIS program. Data points for river-mile and MCS values were plotted and a best-fit curve was developed for each stream. An adjustment was applied to all 138 curves to compensate for differences in MCS values between manual measurements and GIS quantification. The multi-variable equations for Regions 2 and 3 were developed using manual measurements of MCS. A comparison of manual measurements and GIS quantification of MCS indicates that manual measurements typically produce greater values of MCS compared to GIS quantification. Median differences between manual measurements and GIS quantification of MCS are 14.8 and 17.7 percent for Regions 2 and 3, respectively. Comparisons of percentage differences between flood-frequency discharges calculated using MCS values of manual measurements and GIS quantification indicate that use of GIS values of MCS for Region 3 substantially underestimate flood discharges. Mean and median percentage differences for 2- to 500-year recurrence-interval flood discharges ranged from 5.0 to 5.3 and 4.3 to 4.5 percent, respectively, for Region 2 and ranged from 18.3 to 27.1 and 12.3 to 17.3 percent for Region 3. The MCS curves developed from GIS quantification were adjusted by 14.8 percent for streams located in Region 2 and by 17.7 percent for streams located in Region 3. Comparisons of percentage differences between flood discharges calculated using MCS values of manual measurements and adjusted-GIS quantification for Regions 2 and 3 indicate that the flood-discharge estimates are comparable. For Region 2, mean percentage differences for 2- to 500-year recurrence-interval flood discharges ranged between 0.6 and 0.8 percent and median differences were 0.0 percent. For Region 3, mean and median differences ranged between 5.4 to 8.4 and 0.0 to 0.3 percent, respectively. A list of selected stream sites presented with each curve provides information about the sites including river miles, drainage areas, the location of U.S. Geological Survey stream flowgage stations, and the location of streams Abstract crossing hydro logic region boundaries or the Des Moines Lobe landforms region boundary. Two examples are presented for determining river-mile and MCS values, and two techniques are presented for computing flood-frequency discharges.

Effectiveness of Electrochemical Chloride Extraction for the Iowa Avenue Pedestrian Bridge, TR-499, 2005

The main objective of this study is to determine the effectiveness of the Electrochemical Chloride Extraction (ECE) technique on a bridge deck with very high concentrations of chloride. This ECE technique was used during the summer of 2003 to reverse the effects of corrosion, which had occurred in the reinforcing steel embedded in the pedestrian bridge deck over Highway 6, along Iowa Avenue, in Iowa City, Iowa, USA. First, the half cell potential was measured to determine the existing corrosion level in the field. The half-cell potential values were in the indecisive range of corrosion (between -200 mV and -350 mV). The ECE technique was then applied to remove the chloride from the bridge deck. The chloride content in the deck was significantly reduced from 25 lb/cy to 4.96 lb/cy in 8 weeks. Concrete cores obtained from the deck were measured for their compressive strengths and there was no reduction in strength due to the ECE technique. Laboratory tests were also performed to demonstrate the effectiveness of the ECE process. In order to simulate the corrosion in the bridge deck, two reinforced slabs and 12 reinforced beams were prepared. First, the half-cell potentials were measured from the test specimens and they all ranged below -200 mV. Upon introduction of 3% salt solution, the potential reached up to -500 mV. This potential was maintained while a salt solution was being added for six months. The ECE technique was then applied to the test specimens in order to remove the chloride from them. Half-cell potential was measured to determine if the ECE technique can effectively reduce the level of corrosion.